Methods and apparatus to detect a touch pattern
First Claim
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1. A method comprising:
- detecting a first portion of a touch sequence through operating in a first scan mode, wherein the detecting of the first portion includes detecting a first touch for a number of one or more scans of the first scan mode;
detecting a second portion of the touch sequence through operating in a second scan mode, wherein the detecting of the second portion includes detecting the first touch for a number of one or more scans of the second scan mode; and
recognizing the touch sequence based on the total number of scans of the first scan mode plus the total number of scans of the second scan mode being within a selected range.
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Abstract
A method and apparatus detect a first portion of a touch sequence through operating in a first scan mode and detect a second portion of the touch sequence through operating in a second scan mode. A touch sequence may be detected based on the detection of the first portion and the detection of the second portion.
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Citations
20 Claims
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1. A method comprising:
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detecting a first portion of a touch sequence through operating in a first scan mode, wherein the detecting of the first portion includes detecting a first touch for a number of one or more scans of the first scan mode; detecting a second portion of the touch sequence through operating in a second scan mode, wherein the detecting of the second portion includes detecting the first touch for a number of one or more scans of the second scan mode; and recognizing the touch sequence based on the total number of scans of the first scan mode plus the total number of scans of the second scan mode being within a selected range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a scan module configured to operate in a first scan mode and a second scan mode; a presence module coupled to the scan module, the presence module configured to detect a first portion of a touch pattern through the first scan mode and detect a second portion of the touch pattern through the second scan mode, wherein the detection of the first portion includes detection of a first touch for a number of one or more scans of the first scan mode and the detection of the second portion includes detection of the first touch for a number of one or more scans of the second scan mode; and a touch pattern module coupled to the presence module, the touch pattern module configured to recognize the touch pattern based on a sum of the number of one or more scans of the first scan mode and the number of one or more scans of the second scan mode being within a selected range. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a host processor; a touch controller; and a touch interface coupled with the touch controller, the touch controller comprising; a scan module configured to scan at a first frequency and at a second frequency; a presence module coupled to the scan module, the presence module configured to detect a first touch for a number of one or more scans at the first frequency, detect the first touch and a second touch for a number one or more scans at the second frequency, wherein the presence module is configured to scan at the second frequency responsive to the detection of the first attribute of the first touch; and a touch pattern module coupled to the presence module, the touch pattern module configured to recognize a touch pattern based on the number of one or more scans at the first frequency and the number of one or more scans at the second frequency, and signal the host processor to wake up from a sleep mode responsive to the recognition of the touch pattern. - View Dependent Claims (18, 19, 20)
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Specification